Watch List notes:

(x) Centrale Bank van Belgisch-Congo en Ruanda-Urundi, reverse die proofs (2), one in black and white, one in blue and white, ND (1953), the Queen Astrid laboratory in Leopoldville at centre, Watusi with spear at right(Pick 26 for type, TBB B306 for type), in ICG holders 63 UNCIRCULATED and 66 CHOICE NEW, some spotting on the second, rare (2).

Estimate: £200 - £300